Several genes interact to produce cats' hair color and coat patterns.

Besides, he said, because genes interact with the environment, "if we did clone her, it wouldn't be the same sheep."

The way our genes and environment interact to produce a trait can be complicated.

The new gene, for example, may interact badly with the person's other genes.

Often different genes can interact in a way that influences the same trait.

It likely that multiple genes, as well as the environment, interact to influence reading ability.

The genes linked to the two different conditions "interact with each other during development."

They may be tempted to ignore the fact that genes always interact with environment.

Understanding how so many genes interact will not be easy, which makes many biologists eager to try to figure out the worm first.

The zygotic genes also interact with each other to restrict their domains of expression.